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Kafou Mathieu CoulibalyKM

Kafou Mathieu Coulibaly

Full Stack Developer

€250/day
Paris, FR
0-2 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Kafou Mathieu

Hello,

I am Mathieu, a Full Stack Developer. My mission is to transform your idea into a high-performing web application, from mockup to production.

What sets me apart? I combine expertise in modern application development (React, Next.js) with advanced skills in integrating generative AI (RAG).

As a freelancer, I have managed projects from A to Z: from the design and integration of payment systems to optimization (SEO, performance) and deployment (Hostinger, Vercel). You benefit from a single point of contact who understands both the technical challenges and your business objectives.

How I can help you (My services)
I can assist you with various projects, with a results-oriented approach:

Web & SaaS Application Creation: I build your custom application (MVP, business tool, SaaS) using modern technologies (Next.js, Supabase, Node.js) to ensure performance and scalability.

Artificial Intelligence (AI) Integration: Do you have data or PDFs? I develop AI solutions (RAG architecture, LLM like Llama/Qwen) to create intelligent chatbots, content generators, or analysis tools (like my Sheet of Paper project).

High-Performance WordPress Site Creation: I create your showcase site or your e-commerce/donation platform on WordPress. I handle integration, secure payment (PayPal), SEO, and deployment.

E-commerce Migration: Is your site (PrestaShop, Wordpress/WooCommerce) slow? I manage its migration to a more performant solution like Shopify, ensuring a smooth transition.

My Preferred Technologies
Front-End: React.js, Next.js, HTML5, CSS3

Back-End: Node.js, PHP

Databases: Supabase (Postgres, pgvector), MongoDB

CMS: WordPress (Theme Development, WooCommerce)

AI & Data: RAG, Groq, Cohere, LangChain/LlamaIndex (concepts)

DevOps & Tools: Git, Vercel, Hostinger, Figma
  • French

    Native or bilingual

  • English

    Conversational

Can work on-site
Paris (up to 50km)

Experience

  • Freelance
    Full Stack Developer "Sheet of Paper"
    SOFTWARE PUBLISHING
    September 2025 - October 2025 (1 month)
    Paris, France
    End-to-end design, development, and deployment of a SaaS (Software-as-a-Service) application that allows users to transform their course materials (PDFs) into interactive quizzes (MCQs) using AI.

    Product Management & Architecture:

    Definition of user needs: create a revision aid tool.

    Design of the complete technical architecture, from front-end (Next.js) to deployment (Vercel).

    Implementation of a modern and serverless infrastructure solution with Supabase.

    AI Engineering (RAG Architecture):

    Implementation of a complete RAG (Retrieval-Augmented Generation) pipeline to contextualize AI responses.

    Document processing: PDF parsing (unpdf) and semantic chunking to optimize relevance.

    Vectorization (Embeddings) with the Cohere API and storage of vectors in a dedicated database (Supabase pgvector) for similarity search.

    LLM Integration & Prompt Engineering:

    Interfacing with high-performance language models (Qwen, Llama 3) via the Groq API for ultra-fast quiz generation.

    Writing advanced "structured prompts" that force the LLM to generate precise questions/answers, based solely on the context provided by RAG.

    Full Stack & BaaS Development:

    Development of the responsive user interface with Next.js.

    Complete integration of Supabase to manage all back-end needs:

    Authentication: User management (Google/GitHub OAuth).

    Database: Data persistence (Postgres) for generated quizzes and user results.

    Storage: Hosting of uploaded PDF files (Supabase Storage).
    HTTPS://SHEETOFPAPER.VERCEL.APP/
    MongoDB React.js Node.js Artificial Intelligence Project Management
  • BNCTV
    No-code WordPress Developer Hostinger
    SOFTWARE PUBLISHING
    July 2025 - August 2025 (1 month)
    Paris, France
    Website creation mission for the BNC TV channel, managed from design to production.

    Design and Mockup: Analysis of client needs and creation of UI/UX mockups on Figma to validate the artistic direction and ergonomics.

    WordPress Development: Integration of mockups and development of the site on the WordPress CMS. Customization of a theme and configuration of essential plugins (SEO, security, performance).

    Technical SEO Optimization: Implementation of a complete on-page SEO strategy (semantic structure of Hn tags, optimization of meta titles and descriptions, internal linking).

    Web Performance: Optimization of site loading speed (caching, image compression) to improve user experience and ranking.

    Deployment and Administration: Configuration of web hosting (Hostinger), installation of the SSL certificate, and website launch.

    Client Training: Creation of a guide and training for the client on using the WordPress back-office for autonomous content management.
    http://bit.ly/3Kc2L0P
    SEO Wordpress No code Hostinger Project Management
  • Ecolesentinelle
    No-code WordPress Developer Hostinger
    E-COMMERCE
    August 2025 - September 2025 (1 month)
    Paris, France
    WordPress Developer (Freelance) | Creation of a donation collection website (Humanitarian Aid) (July 2025 – August 2025 | Paris)

    Mission: Design and deploy a web platform for a humanitarian cause, with the goal of facilitating the collection of donations (financial and material) to support a school in Haiti.

    WordPress Design and Development:

    Full project management, from mockup to launch.

    Customization of a WordPress theme to reflect the cause's identity, inspire trust, and integrate clear calls to action.

    Integration of a Donation System:

    Implementation of a secure payment solution through PayPal integration, enabling direct financial donations.

    Creation of dedicated contact forms for managing pledges of material donations (school supplies, furniture).

    Optimization & Deployment:

    Optimization of the user journey (UX) to simplify and encourage the donation process, in order to maximize conversion rates.

    Deployment of the site on Hostinger hosting and SSL certificate configuration to ensure donor security and trust.
    Link to the site: https://bit.ly/47gdr8t
    Project Management Wordpress SEO Hostinger No code

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Education

  • BACHELOR WEB DEVELOPMENT AND APPLICATION
    2025
    BACHELOR DEVELOPPEMENT WEB ET APPLICATION
  • BACHELOR OF APPLICATION DESIGN & DEVELOPMENT
    CENTRAL SCHOOL OF ELECTRONICS
    2025
    BACHELOR CONCEPTION & DÉVELOPPEMENT D'APPLICATION

Skill set

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